فهرس المقالات Mohammadmahdi Shamivand المقاله 1 - Application of Chebyshev Polynomials for Solving Abel's Integral Equations of the First and Second Kind Ahmad Shahsavaran M. M. Shamivand Theory of Approximation and Applications , العدد 1 , السنة 12 , بهار 2018 المقاله 2 - Characterization of Regularity of Posemigroups by High-Quasi-Ideals 20.1001.1.25382217.2022.16.2.4.2 Mohammadmahdi Shamivand Theory of Approximation and Applications , العدد 1 , السنة 16 , بهار 2022 المقاله 3 - Numerical solution of Hammerstein Fredholm and Volterra integral equations of the second kind using block pulse functions and collocation method M. M. Shamivand A. Shahsavaran Theory of Approximation and Applications , العدد 1 , السنة 7 , بهار 2013